Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
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Title
Unlock device and stroller
Field of the Invention
The present invention relates to a baby product, particularly an unlock device
and a stroller equipped with the unlock device.
Background of the Invention
A stroller is a transportation designed to provide convenience for outdoor
activities of infants and children, and it has been widely used for a long
time. At
present, some strollers include a frame, a frame folding mechanism, a front
wheel, a
rear wheel and a wheel rotation orientation mechanism. The frame folding
mechanism
is configured to fold the frame. In this way, when the stroller is not in use,
it can be
folded into a smaller volume for easy carrying and storage. The wheel rotation
orientation mechanism is configured to lock or unlock the rotatable rear
wheel. The
wheel rotation orientation mechanism unlocks the rear wheel, such that the
rear wheel
can rotate freely. When reversing, the rear wheel can rotate with a specific
angle to
facilitate the change of orientation for the stroller. After the change of
orientation, the
wheel rotation orientation mechanism can be used to lock the rear wheel to
reposition
the rear wheel to move forward. However, the aforesaid mechanisms occupy much
space of the stroller, the operation is extremely inconvenient, and the
stroller is
unsightly, such that the purchase intention of a consumer may reduce.
Summary of the Invention
The present invention aims at providing an unlock device and a stroller
equipped
with the unlock device, thereby resolving the aforesaid problems.
This is achieved by an unlock device according to claim 1 and a stroller
according to claim 14. The dependent claims pertain to corresponding further
developments and improvements.
As will be seen more clearly from the detailed description following below,
the
claimed unlock device includes at least one operating member, a first unlock
module
and a second unlock module. The at least one operating member is movably
disposed
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on a frame, wherein the frame is equipped with a first lock mechanism and a
second
lock mechanism. The first unlock module is movably disposed on the frame and
connected to the first lock mechanism. The second unlock module is movably
disposed on the frame and connected to the second lock mechanism. The at least
one
operating member moves to drive the first unlock module to move to unlock the
first
lock mechanism or drive the second unlock module to move to unlock the second
lock
mechanism.
As will be seen more clearly from the detailed description following below,
the
claimed stroller includes a frame, a wheel socket, a first lock mechanism, a
second
lock mechanism and the aforesaid unlock device. The wheel socket is rotatably
disposed on a leg of the frame. The first lock mechanism is disposed on the
frame and
configured to fold the frame. The second lock mechanism is disposed on the
frame
and configured to lock the wheel socket. The unlock device is configured to
unlock
the first lock mechanism and the second lock mechanism.
Brief Description of the Drawings
In the following, the invention is further illustrated by way of example,
taking
reference to the accompanying drawings thereof:
FIG. 1 is a perspective view illustrating a stroller of the invention,
FIG. 2 is a perspective view illustrating an unlock device of the invention,
FIG. 3 is a sectional view illustrating an unlock device of the invention
connected to a first lock mechanism and a second lock mechanism,
FIG. 4 is a sectional view illustrating a selecting member of an unlock device
of
the invention sliding rightward,
FIG. 5 is a sectional view illustrating an operating member shown in FIG. 4
being pressed upward,
FIG. 6 is a sectional view illustrating a selecting member of an unlock device
of
the invention sliding leftward,
FIG. 7 is a sectional view illustrating an operating member shown in FIG. 6
being pressed upward,
FIG. 8 is a schematic view illustrating a second lock mechanism of the
invention,
FIG. 9 is a schematic view illustrating a first sliding member and a second
sliding member of the invention,
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FIG. 10 is a sectional view illustrating a selecting member of the invention
located at a second position,
FIG. 11 is a sectional view illustrating a selecting member of the invention
located at a first position,
FIG. 12 is a sectional view illustrating a selecting member of the invention
located between a first position and a second position,
FIG. 13 is a sectional view illustrating an end of an elastic member of the
invention sleeved on a protruding block,
FIG. 14 is a sectional view illustrating a retaining mechanism of the
invention
disposed on an operating member,
FIG. 15 is a sectional view illustrating the operating member shown in FIG. 14
being pressed upward,
FIG. 16 is a sectional view illustrating a retaining mechanism of the
invention
disposed on a second operating member,
FIG. 17 is a sectional view illustrating the second operating member shown in
FIG. 16 being pressed upward,
FIG. 18 is a sectional view illustrating a retaining mechanism of the
invention
disposed on an operating member,
FIG. 19 is a sectional view illustrating the operating member shown in FIG. 18
being pulled upward,
FIG. 20 is a schematic view illustrating a selecting member of the invention
abutting against a first sliding member and a second sliding member,
FIG. 21 is a schematic view illustrating the selecting member shown in FIG. 20
sliding leftward,
FIG. 22 is a schematic view illustrating the first operating member shown in
FIG.
21 being pressed upward,
FIG. 23 is a schematic view illustrating the selecting member shown in FIG. 20
sliding rightward,
FIG. 24 is a schematic view illustrating the second operating member shown in
FIG. 23 being pressed upward,
FIG. 25 is a schematic view illustrating a selecting member of the invention
abutting against a first sliding member,
FIG. 26 is a schematic view illustrating the second operating member shown in
FIG. 25 being pressed upward,
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FIG. 27 is a schematic view illustrating the selecting member shown in FIG. 25
abutting against a second sliding member, and
FIG. 28 is a schematic view illustrating the first operating member shown in
FIG.
27 being pressed upward.
Detailed Description
Referring to FIGs. 1 to 3, a stroller 100 of the invention includes a frame 2,
a
wheel socket 3, a first lock mechanism 4, a second lock mechanism 5 and an
unlock
device 1. In this embodiment, the first lock mechanism 4 may be, but not
limited to, a
frame folding mechanism and the second lock mechanism 5 may be, but not
limited to,
a wheel rotation orientation mechanism. The frame 2 includes a handle 21, a
front leg
22 and a rear leg 23, wherein the front leg 22 and the rear leg 23 are legs of
the frame
2 and each wheel socket is equipped with a wheel. The first lock mechanism 4
is
disposed on the frame 2 and configured to fold the frame 2, wherein the first
lock
mechanism 4 is well known by one skilled in the art. In general, the first
lock
mechanism 4 may include a wire and a lock member. One end of the wire is
connected to the lock member and the lock member is engaged between the handle
21
and the rear leg 23 of the frame 2. When the other end of the wire is pulled,
the wire
drives the lock member to release the engagement to unlock the frame 2, such
that the
frame 2 can be folded. Since the first lock mechanism 4 is well known by one
skilled
in the art, the figure only illustrates the wire of the first lock mechanism
4.
In an exemplary embodiment, the first lock mechanism 4 or the second lock
mechanism 5 could be, but not limited to, one of the lock mechanism of handle
conversion, wheel braking, handle angle adjustment, frame folding and wheel
swiveling lock, but their functions will not duplicate each other.
Referring to FIGs. 1 and 8, the wheel socket 3 is rotatably disposed on the
rear
leg 23 through a central shaft 32, such that the wheel socket 3 can drive the
wheel to
rotate around the central shaft 32. The second lock mechanism 5 is disposed on
the
frame 2 and configured to lock the wheel socket 3. The second lock mechanism 5
includes a linkage member 51 and a couple of positioning assemblies 52
connected to
the linkage member 51. The positioning assembly 52 includes a first drag
member
521, a second drag member 522, a positioning member and a return member 524.
The
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wheel socket 3 has a positioning portion, wherein the positioning portion may
be a
positioning hole 31. The positioning member may be a positioning pillar 523
configured to cooperate with the positioning hole 31. The positioning pillar
523 may
be telescopically disposed in the positioning hole 31. The linkage member 51
is
slidably disposed on the frame 2. An end of the first drag member 521 is
connected to
the linkage member 51 and another end of the first drag member 521 is
connected to
the positioning member. The positioning member is movably disposed on the leg
of
the frame 2 and capable of being connected to or separated from the
positioning
portion. The return member 524 provides an elastic force for pushing the
positioning
member toward the positioning portion. The second drag member 522 is connected
between a second lock module 14 and the linkage member 51. When the second
drag
member 522 is pulled, the second drag member 522 pulls the linkage member 51
to
slide with respect to the frame 2, so as to drive two first drag members 521
to pull two
positioning pillars 523, such that the two positioning pillars 523 retract
into the rear
legs 23 and compress the return members 524 (e.g. springs). At this time, the
two
positioning pillars 523 are ejected from the positioning holes 31 of the wheel
sockets
3 to unlock the wheel sockets 3. Consequently, the wheel sockets 3 can rotate
around
the central shaft 32.
The unlock device 1 is configured to unlock the first lock mechanism 4 and the
second lock mechanism 5. Referring to FIGs. 2 and 3, the unlock device 1 of
the
invention includes at least one operating member 11, a selecting member 12, a
first
unlock module 13 and a second unlock module 14. In this embodiment, the unlock
device 1 includes one operating member 11, but is not so limited. The
operating
member 11 is movably disposed on the frame 2. The selecting member 12 is
movably
disposed on the frame 2. A sliding direction of the selecting member 12 may
intersect
with a sliding direction of the operating member 11. The first unlock module
13 is
movably disposed on the frame 2 and connected to the first lock mechanism 4.
The
second unlock module 14 is movably disposed on the frame 2 and connected to
the
second lock mechanism 5. The selecting member 12 can slide to drive the first
unlock
module 13 and the second unlock module 14 to move, such that one of the first
unlock
module 13 and the second unlock module 14 moves to a position corresponding to
the
operating member 11. Then, the operating member 11 can move to drive the first
unlock module 13 to move to unlock the first lock mechanism 4 or drive the
second
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unlock module 14 to move to unlock the second lock mechanism 5.
In another embodiment, the at least one operating member may comprise a first
operating member and a second operating member configured to unlock the first
lock
mechanism and the second lock mechanism, respectively. In other words, the
invention may also use two operating members to unlock two different lock
mechanisms.
Referring to FIGs. 1 and 8, in this embodiment, the operating member 11 may
slide upward and downward with respect to the frame 2 and the selecting member
12
may slide leftward and rightward with respect to the frame 2. To avoid
misoperation,
the selecting member 12 abuts against the operating member 11. The selecting
member 12 may slide to be apart from the operating member 11, such that the
operating member 11 may slide. Specifically, the selecting member 12 has an
abutting
portion 123 and the abutting portion 123 abuts against the operating member
11, such
that the selecting member 12 may lock the operating member 11 by the abutting
portion 123 to avoid misoperation. The first unlock module 13 is disposed
between
the operating member 11 and the selecting member 12. The first unlock module
13
may be movably disposed on the selecting member 12 and may slide upward and
downward with respect to the selecting member 12. The first unlock module 13
abuts
against the operating member 11. The first unlock module 13 is connected to
the wire
of the first lock mechanism 4 and can drive the wire of the first lock
mechanism 4 to
move. The second unlock module 14 is disposed between the operating member 11
and the selecting member 12. The second unlock module 14 may be movably
disposed on the selecting member 12 and may slide upward and downward with
respect to the selecting member 12. The second unlock module 14 abuts against
the
operating member 11. The second unlock module 14 is connected to the second
drag
member 522 of the second lock mechanism 5 and can drive the second drag member
522 to move. The first unlock module 13 is located at right side of the handle
21 of
the frame 2 and the second unlock module 14 is located at left side of the
handle 21 of
the frame 2. However, the arrangement of the first unlock module 13 and the
second
unlock module 14 is not limited to the aforesaid manner. For example, the
positions of
the first unlock module 13 and the second unlock module 14 may be changed with
each other.
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The selecting member 12 may slide to drive the first unlock module 13 and the
second unlock module 14 to slide, such that the operating member 11 may slide
to
push one of the first unlock module 13 and the second unlock module 14, so as
to
unlock the first lock mechanism 4 or the second lock mechanism 5. For further
explanation, the selecting member 12 may move between a first position (as
shown in
FIG. 6) and a second position (as shown in FIG. 4) with respect to the frame
2. When
the selecting member 12 is located at the first position, the operating member
11 can
slide to drive the first unlock module 13 to move to unlock the first lock
mechanism 4.
When the selecting member 12 is located at the second position, the operating
member 11 can slide to drive the second unlock module 14 to move to unlock the
second lock mechanism 5. Needless to say, in other embodiments, the first
unlock
module 13 and the second unlock module 14 may not abut against the operating
member 11. For example, the operating member 11 may be located at a space
between
the first unlock module 13 and the second unlock module 14. At this time, the
selecting member 12 may not abut against the operating member 11 either.
Referring to FIGs. 3, 6 and 7, in this embodiment, the first unlock module 13
includes a first rotating member 131 and a first sliding member 132. The first
rotating
member 131 is pivotally connected to the frame 2. The first lock mechanism 4
is
connected to a position of the first rotating member 131 eccentric with
respect to a
rotation center of the first rotating member 131. The first sliding member 132
is
slidably disposed on the frame 2. A sliding direction of the first sliding
member 132 is
identical to a sliding direction of the operating member 11. Specifically, the
selecting
member 12 has a first receiving hole 121 and an end of the first sliding
member 132 is
slidably inserted into the first receiving hole 121. The other end of the
first sliding
member 132 abuts against the operating member 11. The first sliding member 132
is
configured to drive the first rotating member 131 to rotate. When the
operating
member 11 slides to push the first sliding member 132, the first sliding
member 132
drives the first rotating member 131 to rotate. Specifically, the first
rotating member
131 has a first protruding portion 131a and the first sliding member 132 has a
first
engaging groove 132a. The first protruding portion 131a is slidably disposed
in the
first engaging groove 132a. The first sliding member 132 can move to push the
first
protruding portion 131a to rotate the first rotating member 131. By means of
the first
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engaging groove 132a, the first rotating member 131 can be disposed on the
first
sliding member 132 stably. More specifically, the first rotating member 131
has a first
connecting member 13 lb, wherein the first connecting member 13 lb is
eccentric with
respect to a rotation center of the first rotating member 131 and connected to
the first
lock mechanism 4. The first rotating member 131 may have two first connecting
members 13 lb. The two first connecting members 131b may be disposed on the
first
rotating member 131 symmetrically. The two first connecting members 131b are
connected to two wires of the first lock mechanism 4, respectively. The
operating
member 11 may be operated to slide to push the first sliding member 132, such
that
the first sliding member 132 slides to push the first protruding portion 131a,
so as to
rotate the first rotating member 131. The first rotating member 131 rotates to
pull the
wire of the first lock mechanism 4, so as to unlock the frame 2. Consequently,
the
frame 2 can be folded.
Referring to FIGs. 3 to 5, in this embodiment, the second unlock module 14
includes a second rotating member 141 and a second sliding member 142. The
second
rotating member 141 is pivotally connected to the frame 2. The second lock
mechanism 5 is connected to a position of the second rotating member 141
eccentric
with respect to a rotation center of the first rotating member 141. The second
sliding
member 142 is slidably disposed on the frame 2. A sliding direction of the
second
sliding member 142 is identical to a sliding direction of the operating member
11.
That is to say, the sliding directions of the first and second sliding members
132, 142
both are identical to the sliding direction of the operating member 11.
Specifically, the
selecting member 12 has a second receiving hole 122 and an end of the second
sliding
member 142 is slidably inserted into the second receiving hole 122. The other
end of
the second sliding member 142 abuts against the operating member 11. The
second
sliding member 142 is configured to drive the second rotating member 141 to
rotate.
When the operating member 11 slides to push the second sliding member 142, the
second sliding member 142 drives the second rotating member 141 to rotate.
Specifically, the second rotating member 141 has a second protruding portion
141a
and the second sliding member 142 has a second engaging groove 142a. The
second
protruding portion 141a is slidably disposed in the second engaging groove
142a. The
second sliding member 142 can move to push the second protruding portion 141a
to
rotate the second rotating member 141. By means of the second engaging groove
142a,
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the second rotating member 141 can be disposed on the second sliding member
142
stably. More specifically, the second rotating member 141 has a second
connecting
member 141b, wherein the second connecting member 141b is eccentric with
respect
to a rotation center of the second rotating member 141 and connected to the
second
lock mechanism 5. The operating member 11 may be operated to slide to push the
second sliding member 142, such that the second sliding member 142 slides to
push
the second protruding portion 141a, so as to rotate the second rotating member
141.
The second rotating member 141 rotates to pull the second drag member 522 of
the
second lock mechanism 5 to eject the positioning pillar 523 from the
positioning hole
31 of the wheel socket 3, so as to unlock the wheel socket 3. Consequently,
the wheel
socket 3 can rotate around the central shaft 32.
Referring to FIG. 3, in this embodiment, the first unlock module 13 and the
second unlock module 14 are arranged symmetrically. The first unlock module 13
and
the second unlock module 14 may be implemented by the cooperation between the
sliding member and the rotating member, but is not so limited. In other
embodiments,
the first unlock module 13 may only dispose the first sliding member 132 and
the first
lock mechanism 4 is connected to the first sliding member 132. The first
sliding
member 132 may be pushed to slide to unlock the first lock mechanism 4.
Alternatively, the second unlock module 14 may only dispose the second sliding
member 142 and the second lock mechanism 5 is connected to the second sliding
member 142. The second sliding member 142 may be pushed to slide to unlock the
second lock mechanism 5. Alternatively, the first unlock module 13 and the
second
unlock module 14 may be arranged asymmetrically. One of the first unlock
module 13
and the second unlock module 14 may be slidably disposed on the frame 2 and
the
other one of the first unlock module 13 and the second unlock module 14 may be
pivotally connected to the frame 2. For example, one of the first unlock
module 13
and the second unlock module 14 may be a sliding member slidably disposed on
frame 2, and the other one of the first unlock module 13 and the second unlock
module 14 may be a rotating member pivotally connected to the frame 2. The
sliding
member and the rotating member are connected to two different lock mechanisms
and
configured to unlock the two different lock mechanisms, respectively.
Referring to FIGs. 3 and 9, in this embodiment, the first sliding member 132
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includes a first sliding portion 132b, a first driving portion 132c connected
to the first
sliding portion 132b, and a first restricting portion 132d connected to the
first driving
portion 132c. The first sliding portion 132b is slidably inserted into the
selecting
member 12. The first driving portion 132c is connected to the first rotating
member
131. The first restricting portion 132d is disposed at a side of the first
driving portion
132c. The second sliding member 142 includes a second sliding portion 142b, a
second driving portion 142c connected to the second sliding portion 142b, and
a
second restricting portion 142d connected to the second driving portion 142c.
The
second sliding portion 142b is slidably inserted into the selecting member 12.
The
second driving portion 142c is connected to the second rotating member 141.
The
second restricting portion 142d is disposed at a side of the second driving
portion
142c. When the operating member 11 slides to push one of the first unlock
module 13
and the second unlock module 14, a first accommodating space 15 is formed
between
the first sliding member 132 and the operating member 11 and a second
accommodating space 16 is formed between the second sliding member 142 and the
operating member 11, so as to prevent the other one of the first unlock module
13 and
the second unlock module 14 from interfering with the operating member 11.
When
the operating member 11 slides to push one of the first unlock module 13 and
the
second unlock module 14, the operating member 11 may be accommodated in the
first
accommodating space 15 or the second accommodating space 16.
Referring to FIGs. 10 to 13, the selecting member 12 may move between a first
position (as shown in FIG. 11) and a second position (as shown in FIG. 10)
with
respect to the frame 2. As shown in FIG. 11, when the selecting member 12 is
located
at the first position, the operating member 11 corresponds to the first unlock
module
13. As shown in FIG. 10, when the selecting member 12 is located at the second
position, the operating member 11 corresponds to the second unlock module 14.
During the operation of the selecting member 12, the following misoperation
may
occur. A user essentially wants to operate the selecting member 12 to slide
toward the
second position to make the operating member 11 correspond to the second
unlock
module 14 and then operate the operating member 11 to slide to push the second
unlock module 14 to unlock the second lock mechanism 5. However, the user
misoperates the selecting member 12 to slide toward the first position to make
the
operating member 11 correspond to the first unlock module 13 and then presses
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operating member 11 to slide to push the first unlock module 13. If there is a
child
seated in the stroller 100, the frame 2 may be folded to harm the child seated
in the
stroller 100. Accordingly, to avoid the aforesaid misoperation, an elastic
member 17
may be disposed between the selecting member 12 and the frame 2 and configured
to
make the selecting member 12 away from the first position. By means of the
elastic
member 17, when the user misoperates the selecting member 12 to slide toward
the
first position, the selecting member 12 compresses the elastic member 17.
After the
user releases the selecting member 12, the selecting member 12 will return to
the
original position due to an elastic force of the elastic member 17. Then, the
selecting
member 12 drives the first sliding member 132 of the first unlock module 13
and the
second sliding member 142 of the second unlock module 14 to return to the
original
position, such that the operating member 11 cannot slide to push the first
unlock
module 13. Consequently, the frame 2 cannot be unlocked and folded, so as to
increase safety for the stroller 100. After the selecting member 12 returns to
the
original position, the selecting member 12 abuts against the operating member
11
again to lock the operating member 11. Specifically, the elastic member 17 may
be,
but not limited to, a spring. The elastic member 17 may also be other elastic
objects.
To position the elastic member 17 well, the frame 2 may have a protruding
block 211,
an end of the elastic member 17 may be sleeved on the protruding block 211 and
abuts against the frame 2, and another end of the elastic member 17 may abut
against
the selecting member 12. However, the invention is not limited to the
aforesaid
embodiment.
Referring to FIGs. 10 and 11, in the second preferred embodiment of the
invention, the elastic member 17 may provide an elastic force to force the
selecting
member 12 to return to the second position, wherein the second position of the
selecting member 12 may be set to be an initial state of the selecting member
12. The
operating member 11 may be pressed directly to push the second unlock module
14 to
unlock the second lock mechanism 5. When the frame 2 needs to be folded, the
selecting member 12 has to slide from the second position to the first
position and be
kept at the first position, so as to make the operating member 11 correspond
to the
first unlock module 13. Then, the operating member 11 can drive the first
unlock
module 13 to slide to unlock the first lock mechanism 4. During the aforesaid
operation, the elastic member 17 is compressed and deforms. When the selecting
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member 12 is released, the selecting member 12 will return to the second
position due
to the elastic force of the elastic member 17.
Referring to FIG. 2, to facilitate the operation of the unlock device 1 of the
invention, the unlock device 1 may be disposed on an upper side of the handle
21 of
the frame 2. Needless to say, in other embodiments, the unlock device 1 may
also be
disposed on other positions of the frame 2.
It should be noted that the unlock device 1 of the invention is not limited to
unlock the frame folding mechanism and the wheel rotation orientation
mechanism.
The first connecting member 131b of the first unlock module 13 and the second
connecting member 141b of the second unlock module 14 may be connected to
other
lock mechanisms of the stroller, such as a handle rotation lock mechanism and
so on.
Furthermore, the unlock device 1 of the invention is not limited to be applied
to the
stroller. The unlock device 1 may be used to unlock two different lock
mechanisms in
other fields.
Referring to FIGs. 3 to 7, the operation of the unlock device 1 of the
invention is
depicted as below. In the beginning, the operating member 11 abuts against the
first
sliding member 132 and the second sliding member 142 simultaneously. When the
first lock mechanism 4 needs to be unlocked, the selecting member 12 is
operated to
move leftward to drive the first unlock module 13 and the second unlock module
14
to move leftward, such that the selecting member 12 is separated from the
operating
member 11 to unlock the operating member 11, the second sliding member 142 of
the
second unlock module 14 is also separated from the operating member 11, and
the
first sliding member 132 of the first unlock module 13 still abuts against the
operating
member 11. When the operating member 11 is pressed, the operating member 11
slides upward to push the first sliding member 132 to slide. The first sliding
member
132 slides to push the first protruding portion 131a to drive the first
rotating member
131 to rotate. The first rotating member 131 rotates to pull the wire of the
first lock
mechanism 4, such that the frame 2 is unlocked. Consequently, the frame 2 can
be
folded. When the second lock mechanism 5 needs to be unlocked, the selecting
member 12 is operated to slide rightward to drive the first unlock module 13
and the
second unlock module 14 to move rightward, such that the selecting member 12
is
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separated from the operating member 11 to unlock the operating member 11, the
first
sliding member 132 of the first unlock module 13 is also separated from the
operating
member 11, and the second sliding member 142 of the second unlock module 14
still
abuts against the operating member 11. When the operating member 11 is
pressed, the
operating member 11 slides upward to push the second sliding member 142 to
slide.
The second sliding member 142 slides to push the second protruding portion
141a to
drive the second rotating member 141 to rotate. The second rotating member 141
rotates to pull the second drag member 522 of the second lock mechanism 5,
such that
the positioning pillar 523 is ejected from the positioning hole 31 of the
wheel socket 3
and then the wheel socket 3 is unlocked. Consequently, the wheel socket 3 can
rotate
around the central shaft 32.
Referring to FIGs. 14 and 15, the unlock device 1 of the invention may further
include a retaining mechanism 6 disposed on the operating member 11. The
retaining
mechanism 6 can retain the operating member 11 at an unlock position (as shown
in
FIG. 15) when the operating member 11 slides to unlock one of the first lock
mechanism 4 and the second lock mechanism 5. Furthermore, the retaining
mechanism 6 can release the operating member 11 when the operating member 11
is
actuated from the unlock position.
In this embodiment, the retaining mechanism 6 may include a first engaging
member 61 and a second engaging member 62. The first engaging member 61 is
fixed
on the operating member 11. The second engaging member 62 is connected to the
frame 2. If the unlock device 1 is disposed on handle 21 of the frame 2, the
second
engaging member 62 may be disposed in and connected to the handle 21 of the
frame
2. The first engaging member 61 has a first inclined groove 611, a second
inclined
groove 612, a third inclined groove 613 and a fourth inclined groove 614
connected to
each other. An end of the second engaging member 62 has an engaging portion
621.
When a user presses the operating member 11 to unlock the first lock mechanism
4 or the second lock mechanism 5, the engaging portion 621 of the second
engaging
member 62 moves along the first and second inclined grooves 611, 612 and then
engages in a recess 615 between the second and third inclined grooves 612, 613
to
retain the operating member 11 at the unlock position (as shown in FIG. 15).
At this
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time, the first lock mechanism 4 or the second lock mechanism 5 is retained at
the
unlock position. Furthermore, when the operating member 11 is actuated from
the
unlock position (i.e. the operating member 11 located at the unlock position
is pressed
again), the engaging portion 621 of the second engaging member 62 disengages
from
the recess 615 and moves along the third and fourth inclined grooves 613, 614
to
release the operating member 11.
For example, the second lock mechanism 5 may be a wheel rotation orientation
mechanism. When the operating member 11 is pressed to unlock the wheel
rotation
orientation mechanism, the retaining mechanism 6 retains the operating member
11 at
the unlock position, such that the wheel can still rotate freely even if the
user releases
the operating member 11. Furthermore, when the operating member 11 is actuated
from the unlock position, the retaining mechanism 6 releases the operating
member 11,
such that the operating member 11 slides to lock the wheel rotation
orientation
mechanism and then the wheel is locked.
Referring to FIGs. 16 and 17, the at least one operating member of the
invention
may include a first operating member 111 and a second operating member 112,
wherein the first operating member 111 slides to drive the first unlock module
13 to
move to unlock the first lock mechanism 4, and the second operating member 112
slides to drive the second unlock module 14 to move to unlock the second lock
mechanism 5. In other words, the invention may also use two operating members
111,
112 to unlock two different lock mechanisms 4, 5. In this embodiment, the
retaining
mechanism 6 may be disposed on the second operating member 112, but is not so
limited. In another embodiment, the retaining mechanism 6 may also be disposed
on
the first operating member 111.
When a user presses the second operating member 112 to unlock the second lock
mechanism 5, the engaging portion 621 of the second engaging member 62 moves
along the first and second inclined grooves 611, 612 and then engages in a
recess 615
between the second and third inclined grooves 612, 613 to retain the second
operating
member 112 at the unlock position (as shown in FIG. 17). At this time, the
second
lock mechanism 5 is retained at the unlock position. Furthermore, when the
second
operating member 112 is actuated from the unlock position (i.e. the second
operating
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member 112 located at the unlock position is pressed again), the engaging
portion 621
of the second engaging member 62 disengages from the recess 615 and moves
along
the third and fourth inclined grooves 613, 614 to release the second operating
member
112, such that the second operating member 112 slides to lock the second lock
mechanism 5.
In an exemplary embodiment, the second lock mechanism 5 could be, but not
limited to, one of the lock mechanism need to hold on or keep in the status,
such as,
wheel braking, and wheel swiveling lock; and the first lock mechanism 4 could
be,
but not limited to, one of the lock mechanism of handle conversion, wheel
braking,
handle angle adjustment, frame folding and wheel swiveling lock, but their
functions
will not duplicate each other.
Referring to FIGs. 18 and 19, a retaining mechanism 7 is pivotally connected
to
the operating member 11 and includes an engaging portion 71 and an elastic
portion
72. Furthermore, the frame 2 has an engaging hole 24. In this embodiment, the
operating member 11 may be configured to unlock the aforesaid second lock
mechanism 5. As shown in FIG. 18, the engaging portion 71 of the retaining
mechanism 7 abuts against the frame 2 and the elastic portion 72 of retaining
mechanism 7 is compressed by the frame 2 before the operating member 11 slides
to
unlock the second lock mechanism 5. As shown in FIG. 19, when the operating
member 11 slides to unlock the second lock mechanism 5, the elastic portion 72
provides an elastic force to drive the retaining mechanism 7 to rotate and the
engaging
portion 71 engages in the engaging hole 24, such that the operating member 11
is
retained at the unlock position. The user may press the retaining mechanism 7
to
disengage the engaging portion 71 from the engaging hole 24 to release the
operating
member 11, such that the operating member 11 slides to lock the second lock
mechanism 5.
Referring to FIGs. 20 to 24, the at least one operating member of the
invention
may include a first operating member 111 and a second operating member 112,
wherein the first operating member 111 slides to drive the first sliding
member 132 to
move to unlock the first lock mechanism 4, and the second operating member 112
slides to drive the second sliding member 142 to move to unlock the second
lock
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mechanism 5. In this embodiment, the selecting member 12 is movably disposed
on
the aforesaid frame 2, such that the selecting member 12 can move between a
first
position (as shown in FIG. 21) and a second position (as shown in FIG. 23)
with
respect to the aforesaid frame 2. In the beginning, the first sliding member
132 and
the second sliding member 142 abut against the selecting member 12, as shown
in
FIG. 20. When the first lock mechanism 4 needs to be unlocked, the selecting
member
12 is operated to move leftward (as shown in FIG. 21), such that the selecting
member
12 is separated from the first sliding member 132 to unlock the first
operating member
111 and the second sliding member 142 still abuts against the selecting member
12. At
this time, a first accommodating space 15 is formed between the first sliding
member
132 and the selecting member 12. When the first operating member 111 is
pressed (as
shown in FIG. 22), the first operating member 111 slides upward to push the
first
sliding member 132 to slide, so as to unlock the first lock mechanism 4. When
the
second lock mechanism 5 needs to be unlocked, the selecting member 12 is
operated
to move rightward (as shown in FIG. 23), such that the selecting member 12 is
separated from the second sliding member 142 to unlock the second operating
member 112 and the first sliding member 132 still abuts against the selecting
member
12. At this time, a second accommodating space 16 is formed between the second
sliding member 142 and the selecting member 12. When the second operating
member 12 is pressed (as shown in FIG. 24), the second operating member 112
slides
upward to push the second sliding member 142 to slide, so as to unlock the
second
lock mechanism 5. It should be noted that how to unlock the first and second
lock
mechanisms 4, 5 has been depicted in detail in the above, so the repeated
explanation
will not be depicted herein again.
Referring to FIGs. 25 to 28, the at least one operating member of the
invention
may include a first operating member 111 and a second operating member 112,
wherein the first operating member 111 slides to drive the first sliding
member 132 to
move to unlock the first lock mechanism 4, and the second operating member 112
slides to drive the second sliding member 142 to move to unlock the second
lock
mechanism 5. In this embodiment, the selecting member 12 is pivotally
connected to
the aforesaid frame 2, such that the selecting member 12 can rotate between a
first
position (as shown in FIG. 27) and a second position (as shown in FIG. 25)
with
respect to the aforesaid frame 2. In the beginning, the selecting member 12 is
located
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at the second position, such that the selecting member 12 is separated from
the second
sliding member 142 to unlock the second operating member 112 and the first
sliding
member 132 abuts against the selecting member 12 to lock the first operating
member
111. At this time, a second accommodating space 16 is formed between the
second
sliding member 142 and the selecting member 12. In this embodiment, a torsion
spring or the like may be used to keep the selecting member 12 at the second
position.
When the second operating member 112 is pressed (as shown in FIG. 26), the
second
operating member 112 slides upward to push the second sliding member 142 to
slide,
so as to unlock the second lock mechanism 5. When the first lock mechanism 4
needs
to be unlocked, the selecting member 12 is operated to rotate counterclockwise
(as
shown in FIG. 27), such that the selecting member 12 is separated from the
first
sliding member 132 to unlock the first operating member 111 and the second
sliding
member 142 abuts against the selecting member 12 to lock the second operating
member 112. At this time, a first accommodating space 15 is formed between the
first
sliding member 132 and the selecting member 12. When the first operating
member
111 is pressed (as shown in FIG. 28), the first operating member 111 slides
upward to
push the first sliding member 132 to slide, so as to unlock the first lock
mechanism 4.
It should be noted that if the selecting member 12 is released from the first
position
shown in FIG. 27, the torsion spring will force the selecting member 12 to
rotate to
the second position shown in FIG. 25, so as to avoid misoperation of the first
operating member 111. It should be noted that how to unlock the first and
second lock
mechanisms 4, 5 has been depicted in detail in the above, so the repeated
explanation
will not be depicted herein again.
As mentioned in the above, the invention uses at least one operating member to
drive the first unlock module to move to unlock the first lock mechanism or
drive the
second unlock module to move to unlock the second lock mechanism. In an
embodiment, a selecting member may be movably disposed on the frame and
capable
of moving between a first position and a second position with respect to the
frame.
When the selecting member is located at the first position, the first lock
mechanism
corresponds to the operating member, such that the operating member can slide
to
drive the first unlock module to move to unlock the first lock mechanism. When
the
selecting member is located at the second position, the second lock mechanism
corresponds to the operating member, such that the operating member can slide
to
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drive the second unlock module to move to unlock the second lock mechanism.
Accordingly, the invention does not need to dispose two independent unlock
devices
for unlocking the first and second lock mechanisms. That is to say, the
invention can
use one single unlock device to unlock two different lock mechanisms.
Therefore, the
manufacturing cost is reduced, the unlock device of the invention occupies
less space
of the stroller, and the operation is easy and convenient.
In another embodiment, the invention may use a retaining mechanism to retain
the operating member at an unlock position when the operating member slides to
unlock the first lock mechanism or the second lock mechanism. Accordingly, the
first
lock mechanism or the second lock mechanism can be retained at an unlock state
until
the operating member is actuated from the unlock position. For example, the
second
lock mechanism may be a wheel rotation orientation mechanism and the retaining
mechanism may retain the operating member at an unlock position when the
operating
member slides to unlock the second lock mechanism. When a user presses the
operating member to unlock the wheel rotation orientation mechanism, the wheel
rotation orientation mechanism is retained at the unlock position, such that a
wheel
can still rotate freely even if the user releases the operating member.
Furthermore,
when the operating member is actuated from the unlock position, the retaining
mechanism releases the operating member, such that the operating member slides
to
lock the wheel rotation orientation mechanism and then the wheel is locked.
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